Add an Operation to Decode a URI to a JSON Object

[Matir]

This essentially turns http://www.example.org:9999/path?foo=bar&baz=1&baz=2#frob into the following:

{
    "protocol": "http:",
    "hostname": "www.example.org",
    "port": "9999",
    "pathname": "/path",
    "hash": "#frob",
    "query": {
        "foo": "bar",
        "baz": [
            "1",
            "2"
        ]
    }
}

This is more or less just exposing the WHATWG URL API to allow further processing of URL components (i.e., via JPATH selectors).